Tie plate



Patented Nov. 9, 1926.

JOHN Lunaire, or newv YORK, N1. Y.

' 'TIE PLATE.

Application 'lcd November 24, 192,5. Serai No. 71,037.

. lhe present invention. relates ments in railroad tie.-] lates.A l

Among the principal objects of.l the.` invention are toV provide atie-plate which will effectively engage a railroad tiefand PreventSpreading of the; track; te Provide such a platewh-ichwill not injurethe fibres ofthe tie upon which it ismou-nted to pro vide suchadevicewhichwill support a rail in a position normal to the coned-treadof a wheel;4 and to provide such "a device which may read-'ily be rolledendover end toV facilitate economical. manufacture. v

ith these and other objects in View, the invention resides in the novelfeaturesl of construction, combination and arrangement of partshereinafter-set forth, illustrated in the accompanying. darwings andspecifically pointed out in the appended claims. v

ln--my re-issuevLetters Patent No. 4,121 of. lVla-y 2, 191.6, atie-plate isv vdisclosed wherein the krail-seat is disposed in a linenorinal to the resultant of the downward force on the rail and thelateral thrust.- The bottomsurface of said tie-plate preferably has aplurality of stepped bearing surfaces which are parallel to; therail-seat whereby to prevent outward slipping of the tie-plate on thetie. With such. a structure the tie-plate becomes embedded in thesurface ofthey tie after a few train-loads have passed. over the railwhich it supports and te imprevein view'o'f the, factthat. there are nopro-v nounced. kshoulders between the adjacent bearing surfaces, theliibres of. the tie will not be injured. `VVhile the tie-plate discloesdin said re-issuey patent has very effectively met all of. the technicalrequirements, there has been some demand from railroad men for atie-plate which in their opinion would take a 'more secure bite in the Ytie, especially into the prevailingv soft wood ties of today. These tiesare now being almost universally creosoted to preserve their life, thusthe saving of them from destruction is a very important factor in thecost of railwayfmaintenance. It is evident, therefore,'that any device`which will give great holding'powerto tie-plates, and, atl

the same time, preserve the tie'from injury, is a distinct element inrailway economy.

In my U. S. Letters Patent No. 1,333,860, issued March 16, 1920, I haveshown another tie-plate having a plurality of inclined bearing surfaceson its lower side and further' provided with substantial abruptshoulders'V between the adjacent bearing sur;

faces.

The structure of the present invention is a compromise between theystructuresv'of the twof above mentioned patents.-A

-Referring now to the drawings'rw'lrevrein similar Areference charactersdesignate con showing the improved tie-plate'i-n use fior Y supportinga' Arail on a tie;

Fig.`2 isa bottom plan view of the tie,- plate, and i p Y Fig.. 3; isan. end elevationof the same looking toward. the inside edge. y

The "referencecharacter 1() designates' a railroad tie of the ordinarywood construction, upon which. is mounted my improved tie-plate 1.1 forthe support of. a raill 12. The f reference character 13 designates avrailroad car-wheel-having the usual confedtread, the A'taper of whichvis aty the present time standardized as 1 in- 20, but which may be 1 in40 or any other desirable ratio.

The tie-plate 11 has on its upper surface a rail-seat' lll-which isinclined downwardly toward its inner edge as clearly shown in 1, theinclination being of substantially the samedegree as the taper on thetread ofV the wheel 13. Adjacent itso-uter edge, the plateV 11 hasA an.'upwardly extending rail abutting shoulder A15 against which Athe outeredgfe of theA rail iiange maybe. poi" sitioned. I

The lower surface of the tie-plate 1.1.is formed with a pluralityof'bearing surfaces 16 which are also inclined downwardly but having agreater inclination than the yrail- 9 seat 14. v

It. obviously would notdo to run these stepsl inthe opposite direction,either with a'V greater or less inclination, as thisy would tend to makethe plate slip outward, except for the holding power of what is'equivalent to ribs at the junction of the steps, and this action wouldtend to destroy the tie. The

adjacent bearing surfaces 16 are joined. or

merged by ogee curves 17 wherebyv to eliminatev abrupt shoulders andthus to prevent Y injury to the fibres of the tie 10. In a directionVparallel to the rail, the plate 11is cambered as clearly shown in Fio.3, whereby to provide'a resilient seating o the plate upon the tie andany desired number of spike holes -18 may be formed` in the plate forthe recepn the tie.

From the forecino' it will be evident that 3 the resultant of thedownward force on the Y than in said patent.

' evenly upon the base flanges of therail, and

by thisv action the wear on the rail and on the wheel will be even so asto assure long life of such equipment. Ther plate 11 is positioned uponthe tie and the'rail 12 subsequently applied thereto and held in placeby spikes; 19, yandV after lseveral ltrainloads have passedover the rail12, the bearing' surfaces 16 and their merging curves 17 become embeddedin the upper surface of thel tie '10 rwithout injury to thefibres/thereof. In viewofthe fact that the'bearing surfaces 16 have agreater inclin'at-ionthan the rail-seat 14, the plate may be moresecurely held against outward slipping on the tie 10 than has beenpossible lwith the structure shownr in my previously mentioned reissuepatent. Also it is to benoted that the vinclined bearing surfaces aremore numerous hese features, besides taking a firmer bite in `the tie,make it possible'to roll the tie-plate stock end over end, vforming thecamber in the same rolling operation,-thusl facilitating the manufactureas will be'readily apparent to those skilled in theY art. c

y Obviously changes maybe resorted to in 'the details of constructionand the propor tion of parts, and the right is herein'reserved to maltesuch changes falling within the scope of the appended claims withoutdeparting from the spirit of the invention.

I have stated herein that my improved tie-plate may be rolled end overend. By this I mean that it may be rolled in a direction transverse tothe railabutting shoulder in contradistinction kto the method of rollingmy earlier tie-plates which were formed .longitudinally with respect tothe railabutting shoulder. rlfhe end over end rolling may be used informing elongated stock from which individualy plates may subsequent-lybe sheared, and as has previously been pointed out, such rolling permitsthe simultaneous formation of the camber.

f What I claim is:

A1. ieplate rhaving an upper surface inclined downwardly toward theinner edge, and forming a Bail-seat, and stepped bottom surfaceswhichare inclined downwardly from the upper surfact` toward the said inneredge of the plate.

2. A'tie-plate having an upper surfaceinclined downwardly toward Vtheinner edge, and forming a rail-seat, and stepped bottom surfaces vwhichare inclined downwardly from the upper surface toward the said inneredge of the plate, said plate being cambered between the two remainingedges.

A tie-plate having a rail-seat normal to theline Aof thrust of aconed-tread car wheel and which is of gradually increasing thicknessfrom its inner edge toward its outer edge, rand stepped bottom surfaceshaving portions which are slightly inclined relatively to the rail-seat,said inclined porsurface forming a rail-seat, and a bottom'surfacefhaving a plurality' of inclined p0rtions of greater inclinationthan the railseat and extending in the same general direction, saidinclined portions `being joined by merged curves. n l

6. A tieplate of the character described having under steppedprojectionsparallel to the length of the rail, each stepped projectionhaving a bearing surface Vwhich is inclinedV upwardly and outwardlytoward the outer edge of the plate and with respect to the horizontalplane of the edges of said projections and which is out of parallel withthe rail-bearing surface'ofthe plate, said projections being of roundedor convex form at said edges.

7.. A tie-plate of the Vcharacter described having an inclinedrail-bearing surface,

"under lstepped projections parallel to the length of the rail, eachstepped projection having a' bearingsurface which is inclined upwardlyandA outwardly with respect to the horizontal plane ofthe Aedges of saidprojections andin the general direction of upward inclination of theinclined rail-bearing surface and so that itis out of parallel with therail-bearing surface of the plate, and the plate having inner cornersbetween the stepped portions, which inner corners are successivelylocated nearer to the railbearing surface as the inner edge ofthe plateis approached.

8. A `tie-plate having a rail-seat normal to the line'of thrust of aconed-tread car wheel and which is of increasing thickness from itsinner edge toward its outer edge` and a bottoni surface having aplurality of bearing surfaces of greater inclination than Ythe rail-seatand extending in substantially TOO plate being cambered in a directionparallel to the rail.

9. A cambered tie-plate having a rail-seat on its upper surface, meansfor resisting outward thrust of a rail, and a plurality of relativelywide stepped bearngsuri'aces on the lower side of the plate, saidbearing surfaces being slightly inclined downwardly and inwardly awayfrom said resisting 10 means.

lO. A tie-plate having a rail-abutting shoulder adjacent its outeredge,and provided with an upper surface inclined downwardly towardtheinneredge to form a railseat, and steppedbottom surfaces which areinclined downwardly with reference to the upper surface andy toward thesaid inner edge of the plate.

JOHN LUN DIE.

